Fuel-feed governor for explosive-engines.



PATENTED JUNE 2, 1903.

- I.-LAUSTMER. PEEL FEED GOVERNOR EOE'EXPLOSIVE ENGINES.

APPLVIOATION FILED 'JULY 16, 1902.

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WITNESSES:

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' I. LAUSTER.

FUEL FEED GOVERNOR EOE EXPLOSIVE ENGINES.

APPLICATION FILED JULY 15, 1902.

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UNITED STATES Patented June 2, 1903.

PATENT @rricn.

IMANUEL LAUSTER, OF AUGSBURG, GERMANY, ASSIGNOR TO VEREINIGTE MASOHINENFABRIK AUGSBURG UND MASCHINENBAUGESELLSCHAF'l NURNBERG A. G., OF AUGSBURG,

GERMANY.

FUEL-FEED GOVERNOR FOR EXPLOSIVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 729,613, dated J une2, 1903.

Application filed July 15. 1902.

To ml], whom it may concern.-

Beit known that I, IMANUEL LAUSTER, a subject of the King of Wiirtemberg, residing at Augsburg, in the Kingdom of Bavaria and German Empire, have invented certain new and useful Improvements in Explosion-Engines, of which the following is a specification.

My invention relates to improvements in fuel-feed governors for eXplosive-engines in IO lyhlCh a thick liquid fuel is supplied to the explosion-chamber by means of a pump i11 tended for high back-pressures; and the object of my improvements is to provide an op crating-gear for the suction-valve of said pump by means of which the quantity of fuel supplied by the pump is regulated in such a manner as to correspond to the varying load of the motor or the running of the engine. I attain this object by the mechanism illus- 2o trated in the, accompanying drawings, in

which Figure 1 is a vertical section of the parts of the engine embodying the invention. Fig. 2 is a front viewlof a modification of a certain part of the operating-gear. Figs. 3 to 5 represent in section three diiferent positions ofthe suction-valve, with diagrammatical views of the connections to the governor in respective conditions.

Similar letters refer to similar p arts throu ghout the several views.

The sprin g-loaded suction-valve a, which is in any event required for the pun1p,is positively opened during the suction stroke by the 3 5 rod 17 and is maintained open during the foreing stroke until the rod 1) leaves the suctionvalve. The displacement of this rodis caused by means of the pumppiston c, (which is driven in any convenient manner,) owing to the fact that the lever cl, which is articulated at e to the rod 1) and pivoted at the point f, which is adjustable by the governor g and suitable intermediate means, is also suitably connected to the pump-piston c at h.

' 5 According to the displacement of the adj ustable pivot f toward the position f, Figs. 3 to 5, or toward the position f the rod 1) leaves the suction-valve either earlier or later during the forcing stroke, so that a smaller or larger quantity of the volume sucked in Serial No. 115,692. (No model.)

during the suction stroke fiows back through the suction-valve into the reservoir 1 and consequently a larger or smaller part is forced to the in aehine.

In the drawings, Figs. 3 to 5, three different 5 5 positions of the suction-valve are shown corresponding to the disposition of the governor with one and the same position of the downwardly-moving pump-piston c.

The essential feature is the adjustable 6o mounting of the lever cl and the driving of this latter by the pump-pistonc, owing to which the travel of the piston is transmitted in a proportionately-reduced manner to the distributing-rod b and from this to the suctionvalve a. In consequence it is only necessary that the displacement of b and the power required for this displacement should be small in the same proportion, and the displacement may be effected by the governor through the aid of a system of levers 7' 7", Fig. 1, or by means of an eccentric 7.: and connecting-lever,

2, while without this reduced transmission of the pump-stroke to the suction-valve the displacement of Z) would necessarily bear a direct proportion to the piston-stroke, thereby necessitating a large expenditure of power for displacing b, and consequently considerable back pressure on the governor and defective regulation.

A further diminution of the power necessary for the displacement of the rod 1) is attained by the provision of the float Z and the valve m, by means of which the level is maintained constant in the supply-reservoir 2' and 8 5 the employment of a stuffing-box for the distributing-rod Z) rendered unnecessary, whereby the resistance inherent to such an arrange ment is also avoided. This arrangement,in addition to diminishing the power required, pre- 0 sents the further advantage that no failure of the pump will occur when thick liquid fuels are employed, because frictional pipe resistance during suction is not present and the suction-valve a, loaded with a spring at, no 5 longer opens automatically, but is positively opened by the novel distributing-gear. In addition this distributing-gear permits of continuous displacement by the governor either during the suction or the forcing stroke of the pump. At no time is the movement of the governor impeded.

WVhat I do claim as my invention, and desire to secure Letters Patent, is

1. In combination in an explosive-engine, a suction-valve for the liquid fuel, a pump-piston for supplying; the fuel, a lever having an adjustable pivot or fulcrum, a connection between the lever and pump-piston, means connected to said lever and adapted to operate the suction-valve, and means for adjusting the fulcrum of said lever, substantially as described. 4

2. In combination in an explosive-engine a suction-valve for the liquid-fuel, a pump-piston for supplyingthe fuel, a lever having an adjustable pivot or fulcrum, a connection between said lever and the pump-piston, a rod connected to said lever and adapted to operate the suction-valve, and means for adjusting said pivot or fulcrum, substantially as dedescribed.

3. In combination in an explosive-engine a suction-valve, a pump-piston, a rocking lever, a governor having a connection with said lever, a second lever having one end pivoted to said first-named lever and its other end operatively connected With the pumppiston, and means connected to the said second lever for positively operating the suction-valve, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

IMANUEL LAUSTER.

WVitnesses:

PETER HARTLIOH, WILHELM EBERLE. 

